CVS commit by ossi: 

- the Sessions tab is now gone, as sessions are defined in a different
  way and the stuff needs to be rewritten completely. i have doubts that
  needs to be in the kcm, though.
  the remainder of the tab is now called "shutdown" - this should have
  been separate from the start, but hey ...
- adapt the Users tab to the new FaceDir stuff


  M +3 -146    kdm-sess.cpp   1.55
  M +0 -27     kdm-sess.h   1.20
  M +12 -16    kdm-users.cpp   1.70
  M +3 -4      main.cpp   1.65